Displaying 1 result from an estimated 1 matches for "orth2raw".
2015 Jul 17
1
Improvements (?) in stats::poly and stats::polym.
...st got lost in the algebra trying to deduce the conventional form coefficients :-{
> Kennedy & Gentle refer to "solving for x in p(x)" which to
> my simple mind suggested `lm' and led to the truly
> horrible approach implemented in the attached
> poly-orth2raw.R.
> I fully accept that there must be a better, more direct,
> way to deduce the conventional form coefficients from the
> centering and normalisation constants but I can't work it
> out, and this approach seems to work.
I'm not really commenting on the above...